Api Testing Mcp

A complete API testing workbench that runs entirely through conversation. You get 42 tools covering HTTP requests with assertions, multi-step flows with variable extraction, OpenAPI spec imports that make the AI schema-aware, load testing with percentile metrics, response diffing across environments, and Postman import/export. It handles environment groups with directory scoping, maintains persistent defaults, and stores everything as local JSON with no cloud dependency. The compression modes cut context window costs by 70-95% while keeping responses debuggable. You can import a Swagger spec and say "create a blog post with random data" and it already knows the required fields and valid enums. Useful when you're building or debugging APIs and want to skip writing test scripts or switching to Postman.